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1 /**
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2 * Stone of Orthanc
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2019 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Affero General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Affero General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Affero General Public License
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18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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19 **/
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20
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21
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22 #include "CairoColorTextureRenderer.h"
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23
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24 #include "../ColorTextureSceneLayer.h"
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25
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26 namespace OrthancStone
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27 {
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28 namespace Internals
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29 {
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30 CairoColorTextureRenderer::CairoColorTextureRenderer(ICairoContextProvider& target,
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31 const ISceneLayer& layer) :
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32 target_(target)
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33 {
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34 Update(layer);
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35 }
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36
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37
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38 void CairoColorTextureRenderer::Update(const ISceneLayer& layer)
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39 {
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40 const ColorTextureSceneLayer& l = dynamic_cast<const ColorTextureSceneLayer&>(layer);
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41
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42 texture_.Copy(l.GetTexture(), true);
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43 textureTransform_ = l.GetTransform();
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44 isLinearInterpolation_ = l.IsLinearInterpolation();
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45 }
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46
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47
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48 void CairoColorTextureRenderer::Render(const AffineTransform2D& transform)
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49 {
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50 cairo_t* cr = target_.GetCairoContext();
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51
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52 AffineTransform2D t =
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53 AffineTransform2D::Combine(transform, textureTransform_);
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54 Matrix h = t.GetHomogeneousMatrix();
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55
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56 cairo_save(cr);
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57
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58 cairo_matrix_t m;
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59 cairo_matrix_init(&m, h(0, 0), h(1, 0), h(0, 1), h(1, 1), h(0, 2), h(1, 2));
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60 cairo_transform(cr, &m);
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61
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62 cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
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63 cairo_set_source_surface(cr, texture_.GetObject(), 0, 0);
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64
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65 if (isLinearInterpolation_)
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66 {
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67 cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_BILINEAR);
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68 }
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69 else
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70 {
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71 cairo_pattern_set_filter(cairo_get_source(cr), CAIRO_FILTER_NEAREST);
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72 }
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73
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74 cairo_paint(cr);
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75
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76 cairo_restore(cr);
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77 }
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78 }
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79 }
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